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TRL Definitions in English

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Technology Readiness Level Definitions
TRL
Definition
Hardware Description
Software Description
Exit Criteria
Basic principles
observed and
reported.
Scientific knowledge generated
underpinning hardware technology
concepts/applications.
Scientific knowledge generated underpinning basic
properties of software architecture and mathematical
formulation.
Peer reviewed publication of
research underlying the
proposed concept/application.
2
Technology concept
and/or application
formulated.
Invention begins, practical application is
identified but is speculative, no
experimental proof or detailed analysis is
available to support the conjecture.
Practical application is identified but is speculative, no
experimental proof or detailed analysis is available to
support the conjecture. Basic properties of algorithms,
representations and concepts defined. Basic principles
coded. Experiments performed with synthetic data.
Documented description of
the application/concept that
addresses feasibility and
benefit.
3
Analytical and
experimental critical
function and/or
characteristic proof
of concept.
Analytical studies place the technology in
an appropriate context and laboratory
demonstrations, modeling and simulation
validate analytical prediction.
Development of limited functionality to validate critical
properties and predictions using non-integrated software
components.
Documented
analytical/experi-mental
results validating predictions
of key parameters.
4
Component and/or
breadboard
validation in
laboratory
environment.
A low fidelity system/component
breadboard is built and operated to
demonstrate basic functionality and
critical test environments, and associated
performance predictions are defined
relative to the final operating
environment.
Key, functionally critical, software components are
integrated, and functionally validated, to establish
interoperability and begin architecture development.
Relevant Environments defined and performance in this
environment predicted.
Documented test
performance demonstrating
agreement with analytical
predictions. Documented
definition of relevant
environment.
5
Component and/or
breadboard
validation in
relevant
environment.
A medium fidelity system/component
brassboard is built and operated to
demonstrate overall performance in a
simulated operational environment with
realistic support elements that
demonstrates overall performance in
critical areas. Performance predictions are
made for subsequent development phases.
End-to-end software elements implemented and interfaced
with existing systems/simulations conforming to target
environment. End-to-end software system, tested in relevant
environment, meeting predicted performance. Operational
environment performance predicted. Prototype
implementations developed.
Documented test
performance demonstrating
agreement with analytical
predictions. Documented
definition of scaling
requirements.
6
System/sub-system
model or prototype
demonstration in an
operational
environment.
A high fidelity system/component
prototype that adequately addresses all
critical scaling issues is built and operated
in a relevant environment to demonstrate
operations under critical environmental
conditions.
Prototype implementations of the software demonstrated on
full-scale realistic problems. Partially integrate with existing
hardware/software systems. Limited documentation
available. Engineering feasibility fully demonstrated.
Documented test
performance demonstrating
agreement with analytical
predictions.
7
System prototype
demonstration in an
operational
environment.
A high fidelity engineering unit that
adequately addresses all critical scaling
issues is built and operated in a relevant
environment to demonstrate performance
in the actual operational environment and
platform (ground, airborne, or space).
Prototype software exists having all key functionality
available for demonstration and test. Well integrated with
operational hardware/software systems demonstrating
operational feasibility. Most software bugs removed.
Limited documentation available.
Documented test
performance demonstrating
agreement with analytical
predictions.
8
Actual system
completed and
"flight qualified"
through test and
demonstration.
The final product in its final configuration
is successfully demonstrated through test
and analysis for its intended operational
environment and platform (ground,
airborne, or space).
All software has been thoroughly debugged and fully
integrated with all operational hardware and software
systems. All user documentation, training documentation,
and maintenance documentation completed. All
functionality successfully demonstrated in simulated
operational scenarios. Verification and Validation (V&V)
completed.
Documented test
performance verifying
analytical predictions.
9
Actual system flight
proven through
successful mission
operations.
The final product is successfully operated
in an actual mission.
All software has been thoroughly debugged and fully
integrated with all operational hardware/software systems.
All documentation has been completed. Sustaining software
engineering support is in place. System has been
successfully operated in the operational environment.
Documented mission
operational results.
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